[[alternative]]The Value of Using VMI with Endogenous Demand

碩士商業教育學系[[abstract]]在今日競爭日益劇烈的全球市場中，由於產品生命週期的縮短及顧客需求的多變，使得供應鏈管理（Supply Chain Management, SCM）已成為大多數企業加緊規劃的策略重點之一，此乃因為伴隨供應鏈管理而來的生產效率及快速回應市場需求的彈性，已成為當前企業面臨生存壓力時，最迫切需要的競爭武器與生存的利基所在。 根據以往學者（Cachon and Fisher, 2000）的研究指出，資訊分享（Information Sharing）對於整體供應鏈之經營績效有很大的幫助，且在資訊分享模式中，供應商代管存貨（Vendor Managed Inventory, VMI）一直是眾多專家學者討論的重點之一，因此本研究也將重心放在此一議題上。 過去關於VMI的研究文獻大都是將焦點放在供應鏈成員間的成本及存貨水準的探討，且在模型分析上大都假設價格為外生決定的，此外，以實際模型來探討VMI對消費者效用之影響的研究也很少，因此本研究想要藉由模型推導的方式，來探討在內生性需求下（意即價格為內生決定且廠商之存貨量會影響市場總需求）實施VMI對製造商、零售商及消費者之效益為何？並期望藉此能提供業界及相關單位一理論性參考的依據。 本研究結果顯示施行VMI至少可達成以下五點效益： 一、 VMI可減少需求不確定性對供應鏈成員之影響。 二、 VMI可讓供應鏈成員較同業享有較佳之競爭優勢。 三、 VMI之實施可讓顧客享有更高的服務水準。 四、 VMI之實施可提升整體社會福利水準。 五、 VMI在某些參數水準之制定上近乎社會福利最適。[[abstract]]In the fierce global market competition, due to the shorter product life cycle and changeable customer demand, the Supply Chain Management (SCM) has become a key strategy that the majority of enterprises step up to plan.This is because the production efficiency and the elasticity of fast response to market demand that follow the coming of Supply Chain Management have become the current enterprises faced with the survival pressure, the most urgent need competition weapon and the survival favorable base. Pointed out according to the former scholar's research（Cachon and Fisher, 2000）that, the Information Sharing has very impressive improvements in supply chain performance. In the Information Sharing pattern, Vendor Managed Inventory (VMI) is always one of key points that the multitudinous experts discuss, therefore this study also puts the center of gravity in this subject. In the past, the literature about VMI was mostly puts the focal point on the supply chain members' cost and inventory level, and the price is assumed exogenous determined. In addition, the study that discusses the influence of VMI to consumers’ utility by building the model is also a little, therefore this study wants to discuss what the value of using VMI with endogenous demand is for the manufacturer, retailer and consumers.This study hopes the result can be provided with a theory reference basis for the industrial field and correlation units. The result appears that implementing VMI can at least achieve five benefits: 1.VMI may reduce the influence of demand uncertainty to the supply chain members. 2.VMI may let the supply chain members enjoy the better competitive advantage than the other same business. 3.Implementing VMI may let customers enjoy the higher service level. 4.Implementing VMI may promote the overall social welfare standard. 5.VMI may approach the optimal social welfare in determining certain parameter standard